Bet Sync

Backtest Club

One trading strategy a month: code, backtest, walk-forward, how it breaks.

Strategy #1 is live, and it lost to a 60/40 portfolio.

Out of sample (2011-2026), the dual-momentum ETF rotation returned 7.18%/yr with a 0.77 Sharpe and a -16.34% max drawdown. Plain 60/40 SPY/IEF returned 9.75%/yr with a 0.99 Sharpe and a -21.02% drawdown over the same window. Less return, less pain. In a block bootstrap of the Sharpe difference, 88% of resamples put the strategy behind 60/40, and the 95% interval [-0.60, +0.16] still crosses zero, so we can’t even call the gap real.

That’s the pitch. You get the numbers that came out, not the numbers that sell.

What ships every month:

  • Full source, runnable end to end on free public data
  • In-sample and out-of-sample results, plus a walk-forward
  • Parameter-surface, cost, and timing-luck sensitivity so you can see how fragile it is
  • A “how this fails” section longer than the section on how it works

You are not buying signals. You are buying reproducible work you can rerun and check line by line, including the parts that didn’t work. If a month’s strategy dies in walk-forward, it ships anyway with the autopsy attached. Those months are usually the useful ones.

Free tier gets last month’s complete strategy, code included, so you can audit the work before paying for anything.

Educational research only. Not investment advice. Backtested and hypothetical results have inherent limitations and do not predict future returns.

Customer reviews
5.05 ratings
Top reviews
  • 1 year ago
    Was able to get on the waitlist for early release; definitely my go to sports betting analytics platform. UI is much cleaner than other platforms and structured way better to show really the data I want / actually use. Made a bit over $300 in just the few days I've been using this from Arbitrage; g...
    Written 3 days after purchase
  • 1 year ago
    Bro this is what every betting Discord wishes they had. Pulls live odds, shows value, tracks movement. it’s like having a market sniper inside Whop.
    Written 2 days after purchase
  • 1 year ago
    Every creator throws the term ‘value plays’ around but BetSync actually shows you where it is. This one’s gonna blow up.
    Written 2 days after purchase
  • 1 year ago
    Super clean interface. Easy to use even if you’re not a sharp. Makes line shopping way faster, especially for player props.
    Written 2 days after purchase